The bar graph shows the number of packets of different food collected in a donation drive.
- 13 of the total number of packets of food collected was flour. How many packets of lentils were collected?
- The table shows the mass of each packet of food.
Food Items |
Mass of each packet |
Flour |
1 kg |
Pasta |
345 g |
Lentils |
490 g |
Noodles |
400 g |
What is the difference between the total mass of noodles collected and the total mass of pasta collected? Give your answer in kg.
(a)
Number of packets of flour collected = 1 u
1 u = 34
Total number of packets of food items collected
= 3 u
= 3 x 34
= 102
Number of packets of lentils collected
= 102 - 34 - 40 - 16
= 12
(b)
Total mass of noodles collected
= 16 x 400
= 6400 g
Total mass of pasta collected
= 40 x 345
= 13800 g
Difference in mass between the total mass of noodles and the total mass of pasta collected
= 13800 - 6400
= 7400 g
1000 g = 1 kg
7400 g = 7400 ÷ 1000 = 7.4 kg
Answer(s): (a) 12; (b) 7.4 kg